Chapter 2.1 Chemistry

If an atom has different neutron numbers but the same proton and electron numbers, it is considered a(n) ______.

• ions
• protons
• isotopes
• compounds

What are found in the space surrounding the nucleus of an atom?

• protons
• electrons
• neutrons
• ions

If an atoms contains 3 protons, 4 neutrons, and 3 electrons, its mass number is

• 3
• 6
• 7
• 11

If an atom contains 11 protons and 12 neutrons, its atomic number is

• 1
• 11
• 12
• 23

A covalent bond is formed as a result of

• transferring electrons
• sharing electrons
• losing electrons
• losing protons

The basic unit of matter is the

• molecule
• compound
• atom
• proton

An element is

• a substance made up of only one kind of atom
• a substance listed on the periodic table
• both of the above
• none of the above

Neutrons and ___________ are found in the nucleus of an atom.

• protons
• ions
• electrons
• isotopes

Which subatomic particle is involved in chemical bonds?

• protons
• neutrons
• electrons
• ions

An atom is considered neutral because its protons and electrons are equal in number.

• True
• False